Question

The number of orbitals associated with quantum numbers $n=5,m_s=+\frac{1}{2}$ is :

• A. 25
• B. 11
• C. 15
• D. 50

Answer 1

Answer: (A)

No. of orbitals $=n^2=5^2=25$
For n = 5, no. of orbitals =$n^2=25$
Total number of orbitals is equal to no. of electrons having $m_s=\frac{1}{2}$